A large number of African Negroes(黑人)were ______ there as slaves .

问题描述:

A large number of African Negroes(黑人)were ______ there as slaves .
A.introducedB.forcedC.shown D.pushed

B.forced为什么啊,能解释一下么被强迫去当奴隶,与句子背景相一致。第一个,被介绍去当奴隶,明显不合理,其他类似